>> reporter: well, tonight, we've already seen new mexico have some isolated hail reports coming out. what's going to happen is, the warm front and the cold front are going to move north and east. dodge city, all the way down into parts of western texas are in the zone that needs to be concerned. but tomorrow, it gets very wide and goes all the way north to minneapolis, south to dallas and that includes chicago and st. louis, for those folks, they have to be ware tomorrow. isolated tornadoes, very strong winds, up to 80 miles an hour and that hail. we'll be watching it on "gma" tomorrow and have all the updates throughout the weekend. >> so, the whole country is going to be effected. thank you so much, ginger. >>> and now, the starting gun sounded today, 74 days until christmas. and, a goliath superstore, today, best buy, gave consumers a new way to save money. now, a number of retail giants are trying to compete and abc's linsey davis explains. >> reporter: the war is on. retail titans fighting for your shopping dollars. putting more power in the hands of all of us consumers. with be